Hi Guys,
As lately I’ve started my jorney to Linux world. I will share some nice script to add new users, which was shared to me by friend of mine.
To configure remote access, you need to change the configuration of ssh-server. In the file /etc/ssh/sshd_config, you must configure the following settings:
ListenAddress 10.10.x.y
PermitRootLogin no
PermitEmptyPasswords no
PasswordAuthentication no
PermitRootLogin no
PermitEmptyPasswords no
PasswordAuthentication no
Before adding users to the server, you need to create a group:
"admins":groupadd – g 500 admins
You must also configure sudo: create a file /etc/sudoers.d/remote_ssh with the content:
{e446ef79be674adb3c6945ce128768d37101f21a4bf2301a6de0b74a3fac67b5}admins ALL = (ALL) NOPASSWD: ALL
In the directory /root create subdirectory “scripts” and create a file “newuser.sh” with the content below:
For Debian:
#!/bin/sh
username=$1
comment=$2
if[ "$username"= ""]; then
error=1
fi
if[ "$comment"= ""]; then
error=1
fi
if[ $error ]; then
echo"usage: `basename $0` username ‘fullname’"
exit
fi
useradd-d /home/$username -c "$comment"-m "$username"
su-m "$username"-c "mkdir -m 0700 /home/$username/.ssh/"
su-m "$username"-c "touch /home/$username/.ssh/authorized_keys"
adduser $username admins
username=$1
comment=$2
if[ "$username"= ""]; then
error=1
fi
if[ "$comment"= ""]; then
error=1
fi
if[ $error ]; then
echo"usage: `basename $0` username ‘fullname’"
exit
fi
useradd-d /home/$username -c "$comment"-m "$username"
su-m "$username"-c "mkdir -m 0700 /home/$username/.ssh/"
su-m "$username"-c "touch /home/$username/.ssh/authorized_keys"
adduser $username admins
For CentOS
#!/bin/bash
username=$1
comment=$2
if [ "$username" = "" ]; then
error=1
fi
if [ "$comment" = "" ]; then
error=1
fi
if [ $error ]; then
echo "usage: `basename $0` username ‘fullname’"
exit
fi
useradd -d /home/$username -c "$comment" "$username"
su -m "$username" -c "mkdir -m 0700 /home/$username/.ssh/"
su -m "$username" -c "touch /home/$username/.ssh/authorized_keys"
usermod -G admins $username
username=$1
comment=$2
if [ "$username" = "" ]; then
error=1
fi
if [ "$comment" = "" ]; then
error=1
fi
if [ $error ]; then
echo "usage: `basename $0` username ‘fullname’"
exit
fi
useradd -d /home/$username -c "$comment" "$username"
su -m "$username" -c "mkdir -m 0700 /home/$username/.ssh/"
su -m "$username" -c "touch /home/$username/.ssh/authorized_keys"
usermod -G admins $username
Permissions to this file must be changed to 700:
chmod 700 /root/scripts/newuser.sh
Regards,
Denis.
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